804453 is the Postal Code of Dihri, Masaurhi which is placed at Patna district, in Bihar state. PIN is the short form of postal index number and it is the mix of 6 digit numeric value that You can also call Pin Code, Postal Code, and Zip Code, that express each post offices with a special numeric value that is distributed into three units means, Postal Code of Dihri is 804453 in which the starting digit means 8 that represent region of Zip Code means Patna and the second digit means 0 that indicate the sub region and the third means 4 is used as short districts like, Patna is the district of Dihri and the last three digits means 453 are used to display the Post Offices.